I have a chance to get a 4" Peacock, and have two choices. First, is an old Oceanic 24, reef-ready that I could plumb into the system. Actually, I have two of these, and was looking for an excuse to flank the 180 with these two tanks! Second, is a spare 55 that I would want to do a kind of community tank. Damsels, Clowns? I know no shrimp, crab, or snails, but does anyone do a get along with mantis tank? Thanks, John